package org.as3search.criteria {
	/*
	 * as3search - http://code.google.com/p/as3search
	 * Copyright (c) 2009-2010 by respective authors. All rights reserved.
	 *
	 * This library is free software; you can redistribute it and/or modify it under the
	 * terms of the GNU Lesser General Public License as published by the Free Software
	 * Foundation; either version 2.1 of the License, or (at your option) any later
	 * version.
	 *
	 * This library is distributed in the hope that it will be useful, but WITHOUT ANY
	 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
	 * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
	 *
	 * You should have received a copy of the GNU Lesser General Public License along
	 * with this library; if not, write to the Free Software Foundation, Inc.,
	 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	 */
	
	import org.as3search.config.SearchConfiguration;
	import org.as3search.config.SearchConfigurationAware;

	/**
	 * <code>NotEmptyExpression</code> evaluates if a collection
	 * is empty.
	 * 
	 * @see org.as3search.criteria.EmptyExpression
	 * @see org.as3search.criteria.NotExpression
	 */
	public class NotEmptyExpression extends NotExpression implements SearchConfigurationAware {
		/**
		 * Creates a new <code>NotEmptyExpression</code> instance.
		 * @param	propertyName	The name of the property to evaluate as being not empty.
		 * @param	configuration	The <code>SearchConfiguration</code> to assist in collection evaluation.
		 */
		public function NotEmptyExpression(propertyName:String, configuration:SearchConfiguration = null) {
			super(new EmptyExpression(propertyName, configuration));
		}
		/**
		 * @inheritDoc
		 */
		public function get configuration():SearchConfiguration { return SearchConfigurationAware(criterion).configuration; }
		public function set configuration(value:SearchConfiguration):void { 
			SearchConfigurationAware(criterion).configuration = value;
		}
		/**
		 * @inheritDoc
		 */
		override public function set criterion(value:Criterion):void {
			if (!(value is EmptyExpression))
				throw new ArgumentError("'criterion' must be an org.as3search.criteria.EmptyExpression");
			
			super.criterion = value;
		}
	}
}